Digital asset data type definitions

ABSTRACT

Data definitions for digital assets, such as, for example, audio, video, photographs, graphics, and electronic documents, are provided that allow these different asset types to be stored in a single database. The definitions are preferably in XML and can be used as a standardized dictionary to more efficiently and economically manage digital assets, thus improving system interoperability between companies or organizations within a company. A digital asset ordering interface, hardware system, software arrangement, and application interface configuration advantageously using these data definitions are also provided.

CROSS REFERENCE TO RELATED APPLICATIONS

This is a continuation of U.S. patent application Ser. No. 10/016,679, filed Dec. 12, 2001, now U.S. Pat. No. 7,558,781, which claims the benefit of U.S. Provisional Application No. 60/254,991, filed Dec. 12, 2000.

BACKGROUND OF THE INVENTION

This invention relates to storing, retrieving, and tracking digital data. More particularly, this invention relates to data definitions that allow disparate types of digital assets, such as, for example, photographs, graphics, audio, video, and text documents, to be easily and economically stored, retrieved, and tracked.

Data definitions may be written using XML (extensible markup language). XML is a condensed form of SGML (standard generalized markup language), which is an information management standard that provides documents that retain formatting, indexing, and linked information—independent of application and platform. XML and SGML can be used to organize and present information on the World Wide Web.

Many companies maintain or access large libraries of various audio, visual, and textual assets. Such assets typically include content and metadata. Content may be, for example, still photographs, audio recordings, video recordings, combined audio/video recordings, combined audio/still photograph recordings, graphics, etc. Metadata is “information about information,” that is, information used to identify or classify the content. Metadata can include, for example, content titles, version numbers, authors, captions, and other descriptive information relevant to the content.

Such assets are often stored in disparate repositories and on disparate media (e.g. audio and video cassette tapes, motion picture film, photographic negatives, digital video discs, etc.). Accordingly, a significant amount of time is often required to locate a particular asset and then deliver a copy of it. For example, it may take several days to locate and manually copy an audio track stored on a reel-to-reel tape located at a creative services or marketing department of a company in California and then have that copy shipped to a business affairs department or sister company in New York. This process, known as repurposing, is manually intensive and prone to errors. Furthermore, keeping track of asset usage (e.g., who has asset copies) is also a manually intensive process prone to errors. Accordingly, it can cost thousands or even millions of dollars annually for a company to manage such assets.

In an attempt to reduce these costs, some companies store assets digitally in one or more computer databases. These assets can then be retrieved electronically using appropriate software applications. However, known applications are limited. For example, databases are commonly structured to store only one type of digital asset, such as, for example, only photographs. The number, size, and formats of record fields used in the database, characters delimiting the end of files, file size of database records, etc. are all usually customized (and limited) to that one type of asset. Even those few databases that are known to store more than one asset type are also limited with respect to record field definitions and record file size, making them incompatible for use with many other types of digital assets. Such databases are thus impractical for storing a large variety of different types of digital assets.

In sum, storing disparate asset types in a single repository having information and formatting sufficient for identification and retrieval by a single software application or computer platform is not known. Moreover, no standardized definitional dictionary for digital assets is known. Thus, system interoperability between two or more companies or two or more organizations within a company having different types of digital assets is still very difficult.

In view of the foregoing, it would be desirable to be able to provide a standardized dictionary of data definitions for disparate types of digital assets.

It would also be desirable to be able to provide data definitions for application and platform independent search, retrieval, delivery, and tracking of digital assets.

It would further be desirable to be able to provide data definitions that reduce digital asset search time.

It would still further be desirable to be able to provide data definitions that reduce digital asset delivery time.

SUMMARY OF THE INVENTION

It is an object of this invention to provide a standardized dictionary of data definitions for disparate types of digital assets.

It is also an object of this invention to provide data definitions for application and platform independent search, retrieval, delivery, and tracking of digital assets.

It is a further object of this invention to provide data definitions that reduce digital asset search time.

It is a still further object of this invention to provide data definitions that reduce digital asset delivery time.

In accordance with this invention, data definitions are provided for digital assets that include a hierarchical structure that reflects the relationships between attributes and categories of content. These definitions, preferably encoded in XML, can be used as a standardized dictionary to create a digital asset library that is easily and economically manageable. The data definitions are applicable to digital assets of disparate data types and include metadata identifiers sufficient to uniquely identify those digital assets.

BRIEF DESCRIPTION OF THE DRAWINGS

The above and other objects and advantages of the invention will be apparent upon consideration of the following detailed description, taken in conjunction with the accompanying drawings, in which like reference characters refer to like parts throughout, and in which:

FIG. 1 is a flow chart of an interface for ordering digital assets using data definitions according to the invention;

FIG. 2 is a block diagram of an embodiment of a hardware system within which the invention can be used;

FIG. 3 is a block diagram of an embodiment of integrated software according to the invention;

FIG. 4 is a block diagram of an embodiment of an application interface configuration according to the invention;

FIG. 5 shows an embodiment of a display screen for asset searching according to the invention;

FIG. 6 shows an embodiment of a display screen for search results according to the invention; and

FIG. 7 is a high level block diagram showing an embodiment of a document type definition (DTD) for digital assets according to the invention.

DETAILED DESCRIPTION OF THE INVENTION

The invention provides data definitions, preferably in XML, for disparate types of digital assets, such as, for example, artwork, logos, photographs, video, graphics, music, still photographs, promotion stills, promos (e.g., an audio or video promotional announcement), tapes, soundtracks, text, video frames (a single image from a video recording), video clips (a group of images from a video recording), and dailies (unedited and unprocessed video or film typically recorded the previous day). Digital assets include content (i.e., the actual asset data) and metadata. Data definitions of the invention advantageously permit a single database to be used for storing, retrieving, and tracking different types of assets whose contents are preferably stored either on the same computer as the database, in the database, on a computer linked to the database via the same network, or combinations thereof. These data definitions allow, for example, employees, affiliates, and customers to relatively easily and economically replicate or transfer assets between repositories where the assets are located and destinations where the assets are currently needed. Furthermore, electronic records can be created to allow usage of those assets to be easily tracked. Thus, the costs associated with managing those assets are significantly reduced.

FIG. 1 shows an interface for searching and ordering digital assets facilitated by the invention. System Home Screen 101 is preferably the first screen a user views when searching for a digital asset (e.g., a video program). While at Home Screen 101, users may enter search criteria before proceeding to another screen. However, this is alternatively not necessary. From Home Screen 101, the user may proceed in one of the following ways: along path 102 to Login Screen 103, along path 104 to Register Screen 105, along path 106 to Advanced Search Screen 107, along path 108 to Top Picks Screen 109, along path 110 to Latest Releases Screen 111, or along path 112 to Editor's Choice Screen 113.

At Login Screen 103, users login to a secured version of a search system associated with interface 100. A user entering Login Screen 103 along path 102 is preferably directed along path 114 to User Home Screen 115 unless the user entered search criteria while viewing Home Screen 101. In that case, the user is preferably directed to Order Confirmation and Download Screen 117 along path 116. Similarly, if the user entered Login Screen 103 along path 127, the user is also preferably directed to Order Confirmation and Download Screen 117.

At Register Screen 105, users register to use the system. Users may be assigned or may freely choose a username, password, and any other relevant identifying information. Users may be prompted by Register Screen 105 to enter information deemed relevant or necessary by the system.

After registering, users are preferably directed along path 118 to User Home Screen 115.

At Advanced Search Screen 107 users enter or are given pre-defined criteria with which the database of the invention can be searched. Screen 107 preferably allows is users to generate advanced search criteria including, but not limited to, searching specific strings, numeric values, fields or combinations of fields containing data, as well as allowing users to define complex or simple search expressions using boolean or other logic, wildcards, multiple search criteria, or any other type of search functionality. Preferably, upon an indication by a user or upon a pre-defined system event (for example, expiration of a timer), a user will be directed along path 119 to Search Results Screen 120.

At Top Picks Screen 109, a user can view and select from a subset of assets defined in the database. This subset may be predefined by the user, the system, or a system administrator. The subset may be defined as the most viewed assets, most searched for assets, most retrieved assets, most popular assets, or top assets based on a criteria defined by a user, the system, or an administrator.

At Latest Releases Screen 111, a user can view and select from a subset of assets in the database. This data is preferably a subset of the most recently added assets in the database. However, the subset may be defined as the most recently released assets, most recently produced assets, or any other desired subset of data in the database.

At Editor's Choice Screen 113, a user can view and select from a subset of assets defined in the database. This subset is preferably a selection of assets that one or more editors, within the company or organization viewing or providing the database, has selected as being desirable for viewing based on one or more criteria defined by the editors.

At User Home Screen 115, a user can view personalized or standard information relating to that user's usage of the database. The system may present the user with search possibilities, the ability to view some subset of assets defined in the database, a listing of data that may be useful in some respect, and any other relevant information or functional possibilities. Preferably, upon an indication by a user or upon a pre-defined system event (for example, expiration of a timer), the user is directed along path 122 to Content Detail Screen 123.

At Search Results Screen 120, a user can view and select from a subset of data retrieved in accordance with criteria defined by the user while viewing Advanced Search Screen 107 and possibly in accordance with one or more database enforced criteria. Upon indicating a selection of one or more assets, a user is directed along path 121 to Content Detail Screen 123.

In addition to being directed along path 121 or 122 as described, a user may be directed along path 124 from any of screens 109, 111, or 113 to Content Detail Screen 123. A user may be automatically directed to screen 123 if a small number of asset definitions are the only items the user wishes to view. For instance, if a user performs a complex search and the system finds only one asset satisfying the search criteria, the system may automatically bypass Search Results Screen 120 and display Content Detail Screen 123.

At Content Detail Screen 123, a user can view all or part of the summary data directly related to one or more items selected manually or automatically by the user. Preferably, upon an indication by the user or upon a pre-defined system event (for example, expiration of a timer), a user is directed along path 125 to Order Options Screen 126.

At Order Options Screen 126, a user can view and select from options related to ordering and downloading data for which summary data was viewed while viewing Content Detail Screen 123. These options may include billing, routing, formatting, data transmission, delivery date, delivery time, and other relevant options. Upon indication by a user or upon a pre-defined system event, the user is directed along path 127 to Login Screen 103 or along path 128 to Order Confirmation And Download Screen 117. Preferably, a user is directed along path 127 when the user has not logged in using Login Screen 103. Alternatively, a user is directed along path 128 when the user had previously logged in via Login Screen 103. In some systems, logging in is not necessary. In other systems, a user that has logged in but has not taken any decisive action (for instance, has not made an indication at Order Options Screen 126 within a specified amount of time after logging in) is directed along path 127.

At Order Confirmation And Download Screen 117 the system preferably displays details and summary information relating to an asset that was ordered by a user. The user is preferably presented with the opportunity to download or retrieve the asset. Such retrieval may be performed either electronically or by using devices (such as printers, tape recorders. compact disc writers, digital video disc writers, or other recording or printing equipment) to convert an asset stored in a database or in an associated or networked computer memory to a digital or analog item stored in another manner.

Note that any of paths 102, 104, 106, 108, 110, 112, 114, 116, 118, 119, 121, 122, 124, 125, or 128 may be traversed in reverse by users that wish to step backwards in the search and ordering process. Also, securing the search system is not a necessary function of the invention. Note further that all of interface 100 is not necessary for implementing the invention; an interface employing even a very small subset of interface 100 can benefit from the invention. Moreover, additional process paths and functionality (for instance, paths connecting any of screens 109, 111, 113, 115, and 123 directly to Search Results Screen 120 to allow a user to view search results from a search performed while viewing any of those screens) can be added to interface 100.

In sum, the data definitions of the invention enable systems using interface 100 or similar interfaces to provide satisfactory interactive search and response times to users.

FIG. 2 shows a hardware system 200 that can be used to manage digital data defined with data definitions in accordance with the invention. System 200 preferably includes one or more servers 201, a secure transmission line 202, at least one secure recording or printing device 203, one or more secure access devices (e.g., laptop 204, computer 205, and workstation 206), at least one firewall 207, one or more non-secure transmission lines 208, one or more non-secure access devices (e.g., computer 209, workstation 210, and laptop 211), and at least one non-secure recording or printing device 212.

One or more servers 201 store all or part of one or more databases. Servers 201 may be accessed via secure transmission line 202 by secure access devices 204-206 or by firewall 207 which has received appropriate indications from non-secure access devices 209-211 via non-secure transmission line 208. Upon receiving appropriate indications from devices 204-206 or firewall 207, servers 201 transmit data to devices 204-206, firewall 207, or recording or printing device 203, as appropriate, via secure transmission line 202.

Upon receiving appropriate indications (based on security criteria), firewall 207 transmits data to non-secure access devices 209-211 or non-secure recording or printing device 212, as appropriate, via non-secured data transmission line 208.

Secure access devices 204-206 and non-secure access devices 209-211 can include laptop computers, desktop computers, and workstations (as shown), as well as other types of terminals, wireless devices, personal digital assistants (PDAs), television set-top boxes, other databases, and other digital devices that can receive user indications and can communicate with servers or firewalls.

Severs 201 can be, for example, Sun® servers using the Solaris® platform, Oracle® database servers, or any other appropriate server platform. Transmission lines 202 and 208 may use T-1, T-2, or any other appropriate transmission standards. Alternatively, the invention can be practiced with a configuration as simple as a single computer that can do the following: store and query a database in its storage medium that can include RAM, ROM, hard disk drive, compact disc, floppy disk; display visual or play audio content; and receive user indications.

FIG. 3 shows an embodiment of integrated software according to the invention. Computer 301 (which may be any of secure access devices 204-206, firewall 207, and non-secure access devices 209-211) communicates with servers 201. Project applications 303, which are preferably encoded in XML, transmit a demand 304 for database information to database 305. Database 305 may be, for example, Oracle®, Sybase®, Microsoft Access®, or any other relational or non-relational database package. Database 305 creates preferably XML files 306. An example of an XML file 306 is shown in Example 2 below. XML files 306 are transmitted in HTML format 307 a for viewing graphics with a browser 308. Microsoft Internet Explorer® and Netscape Navigator® are two examples of browsers that may be used. Preferably, format 307 a is HTML with cascading style sheets (CSS).

Alternatively, XML files 306 may be transmitted in XML format 307 b for use by other applications 309, such as, for example, C, C++, or Java applications that may be for a stand-alone screen, front-end GUI, or Web presentation package. Alternative format 307 b may include XML with CSS for further processing by applications such as search engines or bots or may include regular HTML if a still or active display is the only output requirement. Bots are programs that typically perform repetitive or time consuming tasks on a network (e.g., searching Web sites on the Internet). Examples of formats 307 a and 307 b are shown below in Examples 3a-c.

FIG. 4 shows an embodiment of an application interface configuration in accordance with the invention. In this configuration, a user provides search parameters 401 to client application 402, which is active on computer 301. Client application 402 converts search parameters 401 into a demand 304 for database information. Demand 304 may take the form of an SQL (structured query language) query when database 305 is an SQL-based relational database. Preferably, however, server 201 processes demand 304 in a server application 404. Server application 404 preferably includes the following modules: an XML parser 414, an XSL processor 424, and an XML-SQL utility 434. XSL (extensible style sheet language) is a language for specifying style sheets that apply formatting to complex XML data for presentation in HTML and other formats. XSL can map a single XML element to more than one type of display object (e.g., both an element in a list and an item in a table). A style sheet is a text file containing code to apply semantics such as page layout specifications to an HTML document.

After converting demand 304 to SQL format (if necessary depending on the database), application 404 sends query 405 to database 305. Database 305 processes query 405 and returns search results 406 to application 404. Application 404 then processes results 406 to create one or more XML files. These XML files are sent by application 404 as data 407 to XSL style sheet 408. XSL style sheet 408 processes data 407 and returns a response 307 in format 307 a or 307 b, as appropriate. Client application 402 then converts response 307 into a format that can be heard or viewed by the user.

FIG. 5 shows an example of a display that can be used as Advanced Search Screen 107. Illustrative display 501 includes interactive features 502, 503, 504, and 505. Display 501 may alternatively include more or less interactive features as appropriate for a given implementation of the invention. Interactive feature 502, entitled “PLEASE ENTER KEYWORDS TO SEARCH,” accepts user entries of keywords or phrases to be used by XML project applications 303 when forming demand 304. For example, “Oscar belt” may be entered via interactive feature 502 by a user searching for a picture that has metadata containing the description, “Oscar Delahoya wearing a championship belt.” Interactive feature 503, entitled “PLEASE SELECT ASSET CATEGORY,” accepts user entries for the type of asset to retrieve. For example, possible asset types are photos, audio, video, text, any combination of these, or any other appropriate asset type. Interactive feature 504, entitled “SEARCH,” allows users to submit a search request (i.e., have application 303 form a demand 304). Interactive features 505, entitled “DTD,” “XML,” “XSL,” and “XSL SS,” allow a user to select a source code format in which to view data instead of viewing a composed video screen or hearing a composed audio output.

FIG. 6 shows an example of a display that can be used as Search Results Screen 120. In this example, illustrative display 601 indicates at 602 that 4 photo assets, 1 video asset, and 1 audio asset had been found, and shows at 603 a list of photographic assets, that met the criteria of a demand 304. Illustrative display 601 preferably includes features 604, 605, 606, and 607. Alternatively, display 601 can include more or less features as desired for a given implementation of the invention. Features 604 interactively accepts user indications of selection or rejection of assets from the displayed list of assets. Features 605 may be interactive (e.g., a button) or static (e.g., just a display). In this example, feature 605 displays an image of the assets associated with the retrieved list items. If feature 605 is interactive, it can accept a user's selection of an asset to be ordered. Feature 606 displays descriptive information associated with the assets that met the criteria of demand 304. Feature 606, like feature 605, may be interactive to accept user selections of an asset. Feature 607, entitled “ORDER CHECKED,” is interactive and accepts indications that a user has finished selecting assets and is ready to proceed along path 121 to Content Detail Screen 123.

FIG. 7 shows an embodiment of a document type definition (DTD) in accordance with the invention. A DTD is a separate file or document that contains formal definitions of all the data elements in a particular type of XML (or HTML or SGML) document, such as a report or a book. By consulting the DTD for a document, a program called a parser (e.g., XML parser 414) can work with the markup codes that the document contains. DTD 700 includes asset element 701, which defines the type of data to be stored for each digital asset. DTD 700 may also include one or more other data elements 702 for other uses. For example, asset element 701 can contain a core set of definitions, while data element 702 can contain additional definitions that augment the core set in cases where such additional definitions are required by a particular user.

Asset element 701 preferably includes asset metadata 703, asset type data 704, and asset content 705. Asset element 701 may also include additional definitional information as desired. Asset metadata 703 preferably includes the following definitional elements: product identifier (ID) (e.g., a video program name), version ID, inventory ID, and ownership rights ID. Asset metadata 703 can also include any subset of these identifiers or any additional identification information.

Asset type data 704 advantageously can include any number of definitional elements relevant to a particular type of asset. Table 1 is a preferred embodiment of asset type data 704 in accordance with the invention, showing definitional elements for classifying five asset types:

TABLE 1 ASSET TYPE Photo Movie Audio Promo Voiceovers Metadata Ad Slick Version Music On-Line edit Announcer Agency Rating Stock Airmaster # Session Date Approved Minutes Library EE Master # 1st air date Archive Seconds Sub Library Textless # Residual payment Art Director Date CD # Writer/ Production company Producer Black/White AKA Title CD Title Duration Agency Box ID Type Track Title Music Telephone # Caption Genre Duration Announcer Fed ID# Character Caption Composer Cut versions Address Client Title Publisher Graphics Color Licensor Society Promo Dub Comments Release Shoot Date Material Discard Date Rating Original EPK Entry Date Foreign Code Trailer Lang. Storage Date Run Time Title Kill Date Department Color/BW Duration Comments Final art Director Session DT DAT Job number Cast Composer Script Licensor Brief Publisher EDL Synopsis Off-site P Version Society Screening storage Format notes Photographer Synopsis Rights Internet Issues rights Product ID Product ID Contract (lic.) Poster Art Version ID Internet Press Kit Contract ID International Version ID Run code Library Contact Project SAP Number Resolution Restrictions Shoot date Talent Title

Note that the elements defined in Table 1 are illustrative and thus are neither required nor exclusive of other elements.

Asset content 705 preferably includes one of the following: digitally encoded asset data, a link to a file containing asset data, or a reference to a location where asset data is digitally stored. Alternatively and less preferable, multiple copies of a digital asset can be referenced or included in asset content 705.

An embodiment of DTD 700 for digital assets, which includes asset element 701, asset metadata 703, asset type data 704, and asset content 705, is shown below in Example 1 in accordance with the invention.

EXAMPLE 1

<! -DTD FOR DIGITAL ASSETS -> <! -Digital Library Data Definition -> <! -Supporting technologies include but not limited to XML, XSL, XSLT, XPATH, DTD Schema->

<!ELEMENT digitalAsset (assetMetadata, movieTitleMetadata?, rightsMetadata, transactionMetadata?, Photo*, Promo*, Audio*, Movie*,)> <!ELEMENT assetMetadata (#PCDATA)> <! ATTLIST assetMetadata AssetTitle CDATA #IMPLIED -this asset package has a name- AssetComments CDATA #REQUIRED -comments/description about the asset group- AssetVersion CDATA #REQUIRED -version, major+minor- AssetCreateDate CDATA #REQUIRED -create date- > <!ELEMENT movieTitleMetadata (#PCDATA)> <! ATTLIST movieTitleMetadata PID CDATA #REQUIRED -product id; link to PRIME.PPROD- VID CDATA #REQUIRED -PEG--version id; LINK TO ptime/pversion_general- RID CDATA #REQUIRED -rights id, for FUTURE use- Genre CDATA #REQUIRED -PEG genre, may be several genres [ ] FUT make multiple elements?- Rating CDATA #REQUIRED -PEG MPAA information- movieTitleLong CDATA #REQUIRED -PEG the movie title, full name with all punctuation- movieTitleShort CDATA #REQUIRED -PEG abbreviated movie title, suitable for computer filenames; no blanks, special chars- movieTitleAKA CDATA #IMPLIED -alternate movie name; different countries- StudioProvider CDATA #IMPLIED -PEG--copyright owner or provider of tape- Director CDATA #REQUIRED -PEG--movie director- Cast CDATA #REQUIRED -PEG cast members, talent [ ] FUT make multiple elements?- SynopsisBrief CDATA #REQUIRED -PEG short description- SynopsisLong CDATA #REQUIRED -full description- Languages CDATA #REQUIRED -PEG languages; may be several on many tracks; [ ] FUT make multiple elements?- movieComments CDATA #REQUIRED -transmission commentary information- movieCreateDate CDATA #REQUIRED -PEG needs year creation date- movieRun_Time CDATA #REQUIRED -PEG hh:mm- movieRun_Time-Status CDATA #REQUIRED -estimated or actual- movieRunTimeMinutes CDATA #IMPLIED -RunTime minutes- movieRunTimeSeconds CDATA #IMPLIED -RunTime seconds- Run_Code CDATA #IMPLIED -(ex. 2:02 HA)- Run_Code_Type CDATA #IMPLIED -can include codes indicating type of encoding etc.- Color/BW CDATA #IMPLIED -black & white or color- Caption CDATA #IMPLIED -caption or description information- Keywords CDATA #IMPLIED -digital library query data for file retrieval- > <!-Rights Management Structure-> <!ELEMENT rightsMetadata (#PCDATA)> <! ATTLIST rightsMetadata CID CDATA #REQUIRED -contract id- Amend_No CDATA #IMPLIED -contract amendment number- Ravi_ID CDATA #IMPLIED -rights availability window id- Start_Date CDATA #IMPLIED -PEG start of availability- End_Date CDATA #IMPLIED -PEG end of availability- No_of_Plays CDATA #IMPLIED -allowed number of plays per agreement- Usage_Allowed CDATA #IMPLIED -extra restrictions (ex. Rewind, pause, fast forward)- Fee CDATA #IMPLIED -transaction fee- Authorized_Zone CDATA #IMPLIED -geography or person- World_Wide_Rights CDATA #IMPLIED -yes or no- Music_Effects CDATA #IMPLIED -yes or no (ex. train crash, explosion)- Licensor CDATA #IMPLIED -copyright holder- Coypright Year CDATA #IMPLIED -year of copyright- > <!-Transaction Metadata Structure-> <!ELEMENT transactionMetadata (#PCDATA)> <! ATTLIST transactionMetadata Trans_ID CDATA #REQUIRED -transaction id- Trans_Type CDATA #IMPLIED -type of transaction- Trans_Date CDATA #IMPLIED -date of transaction- Trans User_ID CDATA #IMPLIED -transaction author- > <!-Digital Photo Metadata Structure-> <!ELEMENT Photo (photoMetadata, transactionMetadata)> <!ELEMENT photoMetadata (#PCDATA)> <! ATTLIST photoMetadata <!-Baseline Information - Required fields-> BID CDATA #REQUIRED -base ID- Form_DigitalAsset CDATA #REQUIRED -photographs, graphics, location stills, or royalty fee- Orig Creation Date CDATA #REQUIRED -original creation date of digital photo asset (date field)- Resolution Type CDATA #REQUIRED <!-Production Information (extracted from PRIME)-> Film/Series/Program_Title CDATA #IMPLIED -program title associated with photograph- Orig Broadcast Date CDATA #IMPLIED -original broadcast date of film or series (date field extracted from PRIME)- Orig Broadcast Season CDATA #IMPLIED -original broadcast season of program or series- Orig Release Date CDATA #IMPLIED -original release date of program or series- Film/Series_Creation Date CDATA #IMPLIED -original creation date of film or series (date field)- Original Copyright Year CDATA #IMPLIED -copyright year (date field- Film/Series_Version CDATA #IMPLIED -version control information- Film/Series_Origin CDATA #IMPLIED -origin of film or series (e.g. HBO Theatrical)- Description_Blurb CDATA #IMPLIED -description information extracted from PRIME- Form_Program CDATA #IMPLIED -program type (e.g. Movie)- Genre CDATA #IMPLIED -program style (e.g. Romance, Drama, Comedy)- Rating CDATA #IMPLIED -program rating (e.g. R, PG)- FilmSeries_Director CDATA #IMPLIED -director of film or series- Film/Series_Writer CDATA #IMPLIED -writer of film or series- Film/Series-Producer CDATA #IMPLIED -producer of film or series- Film/Series_Cast Talent CDATA #IMPLIED -film or series cast and talent information- FilmSeries_Production CDATA #IMPLIED -production executive- Executive Film/Series Programming CDATA #IMPLIED -programming executive- Executive <!-Photograph Content Information-> Cast/Talent_Photo CDATA #IMPLIED -cast or talent that appear in photograph- Crew Name_Photo CDATA #IMPLIED -crew that appear in photograph- Crew Position_Photo CDATA #IMPLIED -crew position (e.g. Director, Producer, Writer)- Origin_Photo CDATA #IMPLIED -origin of photo (e.g. Warner Brothers, United Artist, Sports Illustrated)- Agency CDATA #IMPLIED -creative agency information- Art Director_Photo CDATA #IMPLIED -Art Director information- Photographer CDATA #IMPLIED -Photographer information- Requesting Department CDATA #IMPLIED -division requesting digital content- Request Date CDATA #IMPLIED -date of request for digital asset (date field)- <!-Physical Photograph Information-> Orig Photo ID CDATA #IMPLIED -barcode information from photo label Orig Photo Medium CDATA #IMPLIED -(e.g. negative, print, transparency)- Orig Photo Location CDATA #IMPLIED -location of photo in physical archive- Orig Photo Archive Date CDATA #IMPLIED -original archive date of photo (date field)- Orig Photo Archive Box CDATA #IMPLIED -original box number from physical file- Number <!-General Information-> DID CDATA #IMPLIED -digital asset id. link to Artesia UO!_ID_(—) Shoot Type CDATA #IMPLIED -type of photographic shoot (e.g. gallery, location still, acquisition)- Color CDATA #IMPLIED -color space of digital photo (e.g. black & white color)- Description CDATA #IMPLIED -description of digital photograph subject matter- Comments CDATA #IMPLIED -general comments- Ready for Rights CDATA #IMPLIED -yes or no- Input Date CDATA #IMPLIED -date of ingestion into Digital Library system (date field)- Input By CDATA #IMPLIED -name of person responsible for uploading asset into Digital Library- Last Updated Date CDATA #IMPLIED -date of last update or modification (date field)- Last Updated By CDATA #IMPLIED -person responsible for last update or modification- <!-Rights Information-> Asset Copyright Year CDATA #IMPLIED -digital asset year of copyright- Asset Copyright Holder CDATA #IMPLIED -digital asset copyright holder- Restrictions_Legal CDATA #IMPLIED -legal restrictions associated with digital asset- Restrictions_Photographer CDATA #IMPLIED -photographer restrictions associated with digital asset- Restrictions_Exclusives CDATA #IMPLIED -yes or no- Exclusives Held Until CDATA #IMPLIED -expiration of exclusive condition linked to digital asset (date field)- Restrictions_License CDATA #IMPLIED -licensing limitations or restrictions Limitations associated to digital asset- Legal Contact CDATA #IMPLIED -legal contact for information regarding digital content usage- Availability End Date CDATA #IMPLIED -date when digital asset is no longer available for usage (date field)- Rights Input Date CDATA #IMPLIED -date digital rights entered into Digital Library system (date field)- Rights Input By CDATA #IMPLIED -person entering digital rights info into Digital Library system- Rights Last Updated Date CDATA #IMPLIED -date rights information was last upgraded or modified (date field)- Rights Last Updated By CDATA #IMPLIED -person responsible for last update or modification of rights info- <!-Digital Photograph Information-> Filename CDATA #IMPLIED -name of digital file assigned by scanning technician (e.g. sopranos.jpg)- Format CDATA #IMPLIED -file format (e.g. JPEG, TIFF, PPT)- Physical Location CDATA #IMPLIED -archival location of original transparency or print- Server Location CDATA #IMPLIED -location of digital asset storage system- Digitizing Date CDATA #IMPLIED -date digital asset was scanned (date field)- Creator CDATA #IMPLIED -name of person creating the digital file (e.g. scanning technician)- Filesize CDATA #IMPLIED -size of digital file (KB/MB)- Mode CDATA #IMPLIED -color space (e.g. RGB, CMYK, Grayscale)- Height_Inches CDATA #IMPLIED -height of digital image (inches)- Width_Inches CDATA #IMPLIED -width of digital image (inches) Height_Pixels CDATA #IMPLIED -height of digital image (pixels)- Width (Pixesl0 CDATA #IMPLIED -width of digital image (pixels)- Resolution_DPI CDATA #IMPLIED -digital image resolution (dots per inch) > <!-Digital Audio Metadata Structure-> <!ELEMENT Audio (audioMetadata, transactionMetadata)> <!ELEMENT audioMetadata (#PCDATA)> <! ATTLIST audioMetadata AID CDATA #REQUIRED -asset id- PID CDATA #REQUIRED -product ID- CID CDATA #REQUIRED -contract id- Title CDATA #IMPLIED -audio title- Music CDATA #IMPLIED -yes or no- Stock CDATA #IMPLIED -yes or no- Stock_Library CDATA #IMPLIED -music library information- Stock_Sub_Library CDATA #IMPLIED -audio library tracking information- Stock_CD_Nbr CDATA #IMPLIED -CD ID number- Stock_CD_Title CDATA #IMPLIED -CD title information- Stock_Track_Title CDATA #IMPLIED -audio track information- Stock_Duration CDATA #IMPLIED -length of media section- Stock_Composer CDATA #IMPLIED -music composer information- Stock_Publisher CDATA #IMPLIED -publishing party (ex. Warner, etc.)- Stock_Society CDATA #IMPLIED -(ex. ASCAP, etc.)- Original CDATA #IMPLIED -yes or no- Original_Code CDATA #IMPLIED -x- Original_Session_Date CDATA #IMPLIED -date of recording- Original_Composer CDATA #IMPLIED -music composer information- Original_Publisher CDATA #IMPLIED -party of publisher (ex. Warner, etc.)- Original_Society CDATA #IMPLIED -x- Rights_Issues CDATA #IMPLIED -contract information (ex. Rights, Permissions)- Contract_License CDATA #IMPLIED -yes or no- Internet CDATA #IMPLIED -yes or no- International CDATA #IMPLIED -yes or no- Library_Contact CDATA #IMPLIED -contact person- > <!-Long Form Movie Metadata Structure-> <!ELEMENT Movie (movie_FormatMetadata, TransactionMetadata)> <!ELEMENT movie_FormatMetadata (#PCDATA)> <! ATTLIST movie_FormatMetadata SAP CDATA #IMPLIED -yes or no; secondary audio program (ex. Spanish)- P_Version_Format CDATA #IMPLIED -refers to the format information (PRIME Table)- Transmission_Format CDATA #REQUIRED -digital format (ex. MPEG, Quicktime, etc.)- Storage_Capacity CDATA #IMPLIED -storage requirements for digital transmission data- Unit_of_Measure_of_(—) CDATA #IMPLIED -(ex. Megabytes MB, Gigabytes GB, Capacity Terabytes TB)- Compression_Status CDATA #REQUIRED -bit rate information- ESP CDATA #REQUIRED -yes or no- Closed_Caption CDATA #IMPLIED -yes or no- Sound CDATA #IMPLIED -(ex. Stereo, Mono, Dolby, Dolby Digital, Dolby)- >

Example 2 below shows a sample XML document generated as part of a photographic asset search.

EXAMPLE 2

(filename: sample.xml) <?xml version=‘1.0’ standalone=‘no’?> <DAL> <Asset> <Assetmetadata PID=“200000” AssetTitle=“Chaos Factor” Comments=“Soldiers talking to man”> </Assetmetadata> <Photo> <Photometadata Resolution=“72 dpi” Talent=“Unknown”> </Photometadata> </Photo> <Content>chaos_1_t.jpg </Content> </Asset> <Asset> <Assetmetadata PID=“141896” AssetTitle=“lf walls could talk 2” Comments=“An HBO Films trilogy examining the lesbian experience in America in three different decades”> </Assetmetadata> <Photo> <Photometadata Resolution=“72 dpi” Talent=“Ellen Degeneres”> </Photometadata> </Photo> < Content>walls_2_t .jpg </Content> </Asset> <Asset> <Assetmetadata PID=“300000” AssetTitle=“Sex and the city” Comments=“Close up portrait of Sarah JessicaParker”> </Assetmetadata> <Photo> <Photometadata Resolution=“72 dpi” Talent=Sarah and cast”> </Photometadata> </Photo> <Content>sex_sity_2_t.jpg </Content> </Asset> <Asset> <Assetmetadata PID=“141897” AssetTitle=“If walls could talk 2” Comments=“ An HBO Films trilogy examining the lesbian experience in America in three different decades”> </Assetmetadata > <Photo> <Photometadata Resolution=“72 dpi” Talent=“Ellen Degeneres”> </Photometadata> </Photo> < Content>walls_5_t.jpg </Content> </Asset> </DAL>

XSL operates on XML search output. The output from XSL may be either HTML or XML both with CSS. Known software engines, such as, for example, a software engine known as XT developed by James Clark (see http://jclark.com/xml/xt.html for more details), can be used to convert XML into HTML. A sample command for doing such is: C:>XT sample.xml css.xsl output2.xml. This command generates an XML document named output2.xml, which can be displayed using standard browser software.

Example 3a shows a sample XSL script. Example 3b shows a sample HTML document generated by XSL on the XML search output of Example 2. Example 3c shows a sample XML document with CSS also generated by XSL on the XML search output of Example 2.

EXAMPLE 3a

<?xml version=″1.0″?> <xsl:stylesheet version=″1.0″ xmlns:xsl=″http://www.w3.org/1999/XSL/Transform″> <xsl:template match=″/″> <xsl:apply-templates/> </xsl:template> </xsl:template match=″/DAL/Asset″> <TABLE WIDTH=″100%″ BORDER=″1″><TR><TD HEIGHT=″288″> <B>PID:</B><xsl:value-of select-Assetmetadata/@PID/><BR/> <B>Asset Title: </B><xsl:value-of select=″Assetmedatada/@AssetTitle″/><BR/> <B>Comments:</B><xsl:value-of select=″Assetmetadata/@Comments″/><BR/> <B>Resolution:</B><xsl:value-of select=″Photo/Photometadata/@Resolution″/><BR/> <B>Talent:</B><xsl:value-of select=″Photo/Photometadata/@Talent″/><BR/> </TD><TD WIDTH=″288″ HEIGHT=″288″> <xsl:apply-templates /> </TD></TR> </TABLE> </xsl:template> <xsl:template match=″/DAL/Asset/Content″> <P><A href=”{concat(‘full_’,ancestor::Asset/Content)}″><img src=″{ancestor::Asset/Content}″ border=″0″/> </A></P> </xsl:template> </xsl:stylesheet>

EXAMPLE 3b

<HTML> <TABLE WIDTH=“100%” BORDER=“1”><TR> <TD HEIGHT=“288”> <B>PID: </B>200000<BR/> <B>Asset Title:</B>Chaos Factor<BR/> <B>Comments:</B>Soldiers talking to man<BR/> <B>Resolution:</B> 72 dpi<BR/> <B>Talent:</B>Unknown<BR/> </TD><TD WIDTH=“288” HEIGHT=“288”> <P><A href=“full_chaos_1_t.jpg”><img src=“chaos_1_t.jpg” border=“0”/></A></P></TD> </TR></TABLE> <TABLE WIDTH=“100%” BORDER=“1”><TR> <TD HEIGHT=“288”> <B>PID: </B>141896<BR/> <B>Asset Title:</B>lf walls could talk 2<BR/> <B>Comments:</B>An HBO Films trilogy examining the lesbian experience in America in three different decades<BR/> <B>Resolution:</B> 72 dpi<BR/> <B>Talent:</B>Ellen Degeneres<BR/></TD> <TD WIDTH=“288” HEIGHT=“288”> <P><A href=“full_walls_2_t.jpg”><img src=“walls_2_t.jpg” border=“0”/> </A></P></TD> </TR></TABLE> <TABLE WIDTH=“100%” BORDER=“1“><TR> <TD HEIGHT=“288”><B>PID: </B>300000<BR/> <B>Asset Title:</B>Sex and the city<BR/> <B>Comments:</B>Close up portrait of Sarah Jessica Parker<BR/> <B>Resolution:</B> 72 dpi<BR/> <B>Talent:</B>Sarah and cast<BR/></TD> <TD WIDTH=“288” HEIGHT=“288”> <P><A href=“full_sex_city_2_t.jpg”><img src=“sex_city_2_t.jpg” border=“0” /></ A></P> </TD></TR></TABLE> <TABLE WIDTH=“100%” BORDER=“1”><TR> <TD HEIGHT=“288”> <B>PID: </B>141896<BR/> <B>Asset Title:</B>If walls could talk 2<BR/> <B>Comments:</B>An HBO Films trilogy examining the lesbian experience in America in three different decades<BR/> <B>Resolution:</B> 72 dpi<BR/> <B>Talent:</B>Ellen Degeneres<BR/></TD> <TD WIDTH=“288” HEIGHT=“288”> <P><A href=“full_walls_5_t.jpg”> < imgsrc=“walls_5_t.jpg” border=“0”/></ A></P> </TD> </TR></TABLE> </HTML>

EXAMPLE 3c

(filename: css.xml) <?xml version=1.0″?> <xsl:stylesheet version=″1.0″ xmlns:xsl=″http://www .w3.org/1999/xsl/transform″> <xsl:template match=″/″> <xsl: processing-instruction name=″xml-stylesheet″>type=″text/css″ href=″#photos″ </xsl : processing-instruction> <xsl:apply-templates select=″DAL″/> </xsl:template> <xsl:template match=″.″> <xsl:copy><xsl:value-of select=″.″/></xsl:copy> </xsl:template> <xsl:template match=″DAL ″> <style id=photos″> Asset {display: block; position:relative;width:100%;height:225px; border:inset3px gray;} Assetmetadata {display:inline;font-size:14pt;} Photo {display:inline;font-size:12pt;} Photometadata {display:inline;font-size: 12pt;} Content {width:72 px; height:72px;position:relative;display:block;float:left;} <xsl:for-each select=″//Asset″>Content[photo<xsl: value-of select=″@PID″/> ] {background-image:url(<xsl:value-of select=″Content″/>);} </xsl:for-each> </style> <xsl:apply-templates select=″Asset″/> </xsl:template> <xsl:template match=″/DAL/Asset/Content″> <Content id =″{concat(Photo’, sibling::Assetmetadata/@PID)} href=”{sibling::Asset/Content}”/> </xsl:template> <xsl:template match=″/DAL/Asset″> <TABLE WIDTH=″100%″ BORDER=″1″><TR><TD HEIGHT=″288″> <B>PID: </B><xsl:value-of select=Assetmetadata/@PID/><BR/> <B>Asset Title:</B> <xsl:value-of select=″Assetmetadata/@AssetTitle″ /><BR/> <B>Comments:</B><xsl:value-of select=″Assetmetadata/@Comments″ /><BR/> <B>Resolution:</B><xsl:value-of select=″Photo/Photometadata/@Resolution″/><BR/> <B>Talent:</B><xsl:value-of select=″Photo/Photometadatal@Talent″/>< BR/> </TD> <TD WIDTH=″288″ HEIGHT=″288″> <xsl:apply-templates /> </TD> </TR></TABLE> </xsl:template> <xsl:template match=″/DAL Asset/Content″> <P><A href=″{concat(‘photo’,sibling::asset/content )}″> <img src=″{ancestor::Asset/Content}″ border=″0″/> </A></P> </xsl:template> </xsl:stylesheet>

Thus it is seen that XML data definitions for digital assets are provided that can be used as a standardized dictionary for application and platform independent exchange and repurposing of those assets. One skilled in the art will appreciate that the present invention can be practiced by other than the described embodiments, which are presented for purposes of illustration and not of limitation, and the present invention is limited only by the claims which follow. 

1. A method of searching a database for different types of digital assets, the method comprising: storing data in a memory that is read by a computer, the data comprising a server application program and only one single document type definition (DTD) for use in storing, retrieving, searching, or tracking at least three different types of digital assets stored in a single database, each digital asset of the digital assets including content and metadata, the metadata including rights management information, the server application program including modules for a parser, a query language utility, and a style sheet processor; receiving a demand containing user entered search parameters for information pertaining to the at least three different types of digital assets; accessing the DTD by executing the server application program, the DTD defining declared elements for the at least three different types of digital assets and defining elements and attributes for rights management of the at least three different types of digital assets, the at least three different types of digital assets including movies, photographs, and at least one of audio recordings, video recordings, promotional announcements, voiceovers, graphics, artwork, or text documents, wherein the rights management elements and attributes comprise metadata for at least one of: a contract identifier, an availability start date, an availability end date, an allowed number of plays per agreement, a copyright holder identifier, or a worldwide rights identifier, wherein the DTD defines metadata for movies and metadata attributes for the movie metadata, the movie-metadata attributes comprising at least one of: a definition for title, a definition for version, a definition for rating, a definition for minutes, a definition for release date, a definition for run time, a definition for color, a definition for synopsis, a definition for director, a definition for cast, or a definition for allowable usage of a movie, wherein the DTD defines metadata for photographs and metadata attributes for the photograph metadata, the photograph-metadata attributes comprising at least one of: a definition for black/white, a definition for color, a definition for caption, or a definition for legal restrictions; converting the demand into a query to be transmitted to the database by using the query language utility; searching the at least three different types of the digital assets in accordance with the converted demand and the accessed DTD; and converting search results returned from the database into a style sheet for input to a client application by using the style sheet processor.
 2. The method of claim 1 wherein the single database comprises a movie and a photograph, the photograph pertaining to the movie.
 3. The method of claim 1 wherein the query language utility is a structured query language (SQL) utility and the style sheet processor is an extensible style sheet language (XSL) processor.
 4. A computer system for performing the method of claim 1, the system comprising: a server comprising the single database; a first computer readable storage medium comprising the DTD; and a second computer readable storage medium comprising the server application program.
 5. The computer system of claim 4 wherein the first and second computer readable storage mediums are the same computer readable storage medium.
 6. A computer readable storage medium storing computer-executable instructions executable by a computer for performing the method of claim
 1. 7. A method of searching a database for different types of digital assets, the method comprising: storing data in a memory that is read by a computer, the data comprising a server application program and only one single document type definition (DTD) for use in storing, retrieving, searching, or tracking at least three different types of digital assets stored in a single database, each digital asset of the digital assets including content and metadata, the metadata including rights management information, the server application program including modules for a parser, a query language utility, and a style sheet processor; receiving a demand containing user entered search parameters for information pertaining to the at least three different types of digital assets; accessing the DTD by executing the server application program, the DTD defining declared elements for the at least three different types of digital assets and defining elements and attributes for rights management of the at least three different types of digital assets, the at least three different types of digital assets including movies, audio recordings, and at least one of photographs, video recordings, promotional announcements, voiceovers, graphics, artwork, or text documents, wherein the rights management elements and attributes comprise metadata for at least one of: a contract identifier, an availability start date, an availability end date, an allowed number of plays per agreement, a copyright holder identifier, or a worldwide rights identifier, wherein the DTD defines metadata for movies and metadata attributes for the movie metadata, the movie-metadata attributes comprising at least one of: a definition for title, a definition for version, a definition for rating, a definition for minutes, a definition for release date, a definition for run time, a definition for color, a definition for synopsis, a definition for director, a definition for cast, or a definition for allowable usage of a movie, wherein the DTD defines metadata for audio recordings and metadata attributes for the audio-recordings metadata, the audio-recordings-metadata attributes comprising a definition for rights issues regarding use of an audio recording; converting the demand into a query to be transmitted to the database by using the query language utility; searching the at least three different types of the digital assets in accordance with the converted demand and the accessed DTD; and converting search results returned from the database into a style sheet for input to a client application by using the style sheet processor.
 8. The method of claim 7 wherein the single database comprises a movie and an audio recording, the audio recording comprising a soundtrack from the movie.
 9. The method of claim 7 wherein the audio-recordings-metadata attributes further comprise at least one of: a definition for music; a definition for track title; a definition for duration; a definition for compact disc (CD) number; or a definition for CD title.
 10. A computer system for performing the method of claim 7, the system comprising: a server comprising the single database; a first computer readable storage medium comprising the DTD; and a second computer readable storage medium comprising the server application program.
 11. A computer readable storage medium storing computer-executable instructions executable by a computer for performing the method of claim
 7. 12. A method of searching a database for different types of digital assets, the method comprising: storing data in a memory that is read by a computer, the data comprising a server application program and only one single document type definition (DTD) for use in storing, retrieving, searching, or tracking at least three different types of digital assets stored in a single database, each digital asset of the digital assets including content and metadata, the metadata including rights management information, the server application program including modules for a parser, a query language utility, and a style sheet processor; receiving a demand containing user entered search parameters for information pertaining to the at least three different types of digital assets; accessing the DTD by executing the server application program, the DTD defining declared elements for the at least three different types of digital assets and defining elements and attributes for rights management of the at least three different types of digital assets, the at least three different types of digital assets including photographs, video recordings, and at least one of audio recordings, movies, promotional announcements, voiceovers, graphics, artwork, or text documents, wherein the rights management elements and attributes comprise metadata for at least one of: a contract identifier, an availability start date, an availability end date, an allowed number of plays per agreement, a copyright holder identifier, or a worldwide rights identifier, wherein the DTD defines metadata for photographs and metadata attributes for the photograph metadata, the photograph-metadata attributes comprising at least one of: a definition for black/white, a definition for color, a definition for caption, or a definition for legal restrictions, wherein the DTD defines metadata for video recordings and metadata attributes for the video recordings metadata, the video-recordings-metadata attributes comprising at least one of: a definition for title, a definition for version, a definition for author, a definition for caption, or a definition for ownership rights; converting the demand into a query to be transmitted to the database by using the query language utility; searching the at least three different types of the digital assets in accordance with the converted demand and the accessed DTD; and converting search results returned from the database into a style sheet for input to a client application by using the style sheet processor.
 13. The method of claim 12 wherein the single database comprises a photograph and a video recording, the photograph pertaining to the video recording.
 14. A computer system for performing the method of claim 12, the system comprising: a server comprising the single database; a first computer readable storage medium comprising the DTD; and a second computer readable storage medium comprising the server application program.
 15. A computer readable storage medium storing computer-executable instructions executable by a computer for performing the method of claim
 12. 16. A method of searching a database for different types of digital assets, the method comprising: storing data in a memory that is read by a computer, the data comprising a server application program and only one single document type definition (DTD) for use in storing, retrieving, searching, or tracking at least three different types of digital assets stored in a single database, each digital asset of the digital assets including content and metadata, the metadata including rights management information, the server application program including modules for a parser, a query language utility, and a style sheet processor; receiving a demand containing user entered search parameters for information pertaining to the at least three different types of digital assets; accessing the DTD by executing the server application program, the DTD defining declared elements for the at least three different types of digital assets and defining elements and attributes for rights management of the at least three different types of digital assets, the at least three different types of digital assets including photographs, promotional announcements, and at least one of movies, video recordings, audio recordings, voiceovers, graphics, artwork, or text documents, wherein the rights management elements and attributes comprise metadata for at least one of: a contract identifier, an availability start date, an availability end date, an allowed number of plays per agreement, a copyright holder identifier, or a worldwide rights identifier, wherein the DTD defines metadata for photographs and metadata attributes for the photograph metadata, the photograph-metadata attributes comprising at least one of: a definition for black/white, a definition for color, a definition for caption, or a definition for legal restrictions, wherein the DTD defines metadata for promotional announcements and metadata attributes for the promotional announcements metadata, the promotional-announcements-metadata attributes comprising at least one of: a definition for title, a definition for airmaster number, a definition for writer/producer, a definition for duration, a definition for announcer, a definition for trailer, a definition for kill date, a definition for comments, or a definition for Internet rights; converting the demand into a query to be transmitted to the database by using the query language utility; searching the at least three different types of the digital assets in accordance with the converted demand and the accessed DTD; and converting search results returned from the database into a style sheet for input to a client application by using the style sheet processor.
 17. The method of claim 16 wherein the single database comprises a photograph, a promotional announcement, and a movie, the photograph and the promotional announcement pertaining to the movie.
 18. A computer system for performing the method of claim 16, the system comprising: a server comprising the single database; a first computer readable storage medium comprising the DTD; and a second computer readable storage medium comprising the server application program.
 19. A computer readable storage medium storing computer-executable instructions executable by a computer for performing the method of claim
 16. 20. A method of searching a database for different types of digital assets, the method comprising: storing data in a memory that is read by a computer, the data comprising a server application program and only one single document type definition (DTD) for use in storing, retrieving, searching, or tracking at least three different types of digital assets stored in a single database, each digital asset of the digital assets including content and metadata, the metadata including rights management information, the server application program including modules for a parser, a query language utility, and a style sheet processor; receiving a demand containing user entered search parameters for information pertaining to the at least three different types of digital assets; accessing the DTD by executing the server application program, the DTD defining declared elements for the at least three different types of digital assets and defining elements and attributes for rights management of the at least three different types of digital assets, the at least three different types of digital assets including promotional announcements, audio recordings, and at least one of photographs, movies, video recordings, voiceovers, graphics, artwork, or text documents, wherein the rights management elements and attributes comprise metadata for at least one of: a contract identifier, an availability start date, an availability end date, an allowed number of plays per agreement, a copyright holder identifier, or a worldwide rights identifier, wherein the DTD defines metadata for promotional announcements and metadata attributes for the promotional announcements metadata, the promotional-announcements-metadata attributes comprising at least one of: a definition for title, a definition for airmaster number, a definition for writer/producer, a definition for duration, a definition for announcer, a definition for trailer, a definition for kill date, a definition for comments, or a definition for Internet rights; wherein the DTD defines metadata for audio recordings and metadata attributes for the audio-recordings metadata, the audio-recordings-metadata attributes comprising a definition for rights issues regarding use of an audio recording; converting the demand into a query to be transmitted to the database by using the query language utility; searching the at least three different types of the digital assets in accordance with the converted demand and the accessed DTD; and converting search results returned from the database into a style sheet for input to a client application by using the style sheet processor.
 21. A computer system for performing the method of claim 20, the system comprising: a server comprising the single database; a first computer readable storage medium comprising the DTD; and a second computer readable storage medium comprising the server application program.
 22. A computer readable storage medium storing computer-executable instructions executable by a computer for performing the method of claim
 20. 23. A method of searching a database for different types of digital assets, the method comprising: storing data in a memory that is read by a computer, the data comprising a server application program and only one single document type definition (DTD) for use in storing, retrieving, searching, or tracking at least three different types of digital assets stored in a single database, each digital asset of the digital assets including content and metadata, the metadata including rights management information, the server application program including modules for a parser, a query language utility, and a style sheet processor; receiving a demand containing user entered search parameters for information pertaining to the at least three different types of digital assets; accessing the DTD by executing the server application program, the DTD defining declared elements for the at least three different types of digital assets and defining elements and attributes for rights management of the at least three different types of digital assets, the at least three different types of digital assets including promotional announcements, voiceovers, and at least one of photographs, movies, audio recordings, video recordings, graphics, artwork, or text documents, wherein the rights management elements and attributes comprise metadata for at least one of: a contract identifier, an availability start date, an availability end date, an allowed number of plays per agreement, a copyright holder identifier, or a worldwide rights identifier, wherein the DTD defines metadata for promotional announcements and metadata attributes for the promotional announcements metadata, the promotional-announcements-metadata attributes comprising at least one of: a definition for title, a definition for airmaster number, a definition for writer/producer, a definition for duration, a definition for announcer, a definition for trailer, a definition for kill date, a definition for comments, or a definition for Internet rights; wherein the DTD defines metadata for voiceovers and metadata attributes for the voiceovers metadata, the voiceovers-metadata attributes comprising at least one of: a definition for announcer, a definition for session date, a definition for production company, a definition for first air date, a definition for agency, a definition for address, or a definition for telephone number; converting the demand into a query to be transmitted to the database by using the query language utility; searching the at least three different types of the digital assets in accordance with the converted demand and the accessed DTD; and converting search results returned from the database into a style sheet for input to a client application by using the style sheet processor.
 24. A computer system for performing the method of claim 23, the system comprising: a server comprising the single database; a first computer readable storage medium comprising the DTD; and a second computer readable storage medium comprising the server application program.
 25. A computer readable storage medium storing computer-executable instructions executable by a computer for performing the method of claim
 23. 